CN110828985A

CN110828985A - Antenna unit and electronic equipment

Info

Publication number: CN110828985A
Application number: CN201911049734.8A
Authority: CN
Inventors: 邾志民; 黄奂衢; 王义金; 马荣杰
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-21
Also published as: WO2021083214A1

Abstract

The embodiment of the invention provides an antenna unit and electronic equipment, relates to the technical field of communication, and aims to solve the problem that the antenna performance of the electronic equipment is poor due to the fact that the frequency range covered by a millimeter wave antenna of the conventional electronic equipment is small. The antenna unit includes: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator; each of the M feed portions is electrically connected with the first end of one feed arm and insulated from the metal groove, the M feed arms are located between the bottom of the metal groove and the first insulator and arranged in the metal groove in a surrounding mode according to a first sequence, each of the M feed arms is coupled with the target radiator, and M is an integer larger than 1. The antenna unit is applied to electronic equipment.

Description

Antenna unit and electronic equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to an antenna unit and electronic equipment.

Background

With the development of the fifth Generation mobile communication (5th-Generation, 5G) system and the wide application of electronic devices, the millimeter wave antenna is gradually applied to various electronic devices to meet the increasing use requirements of users.

At present, millimeter wave antennas in electronic devices are mainly implemented by using an Antenna In Package (AiP) technology. For example, as shown in fig. 1, an array antenna 11 with an operating wavelength of millimeter waves, a Radio Frequency Integrated Circuit (RFIC) 12, a Power Management Integrated Circuit (PMIC) 13 and a connector 14 may be packaged into a module 10 by AiP technology, where the module 10 may be referred to as a millimeter wave antenna module. The antenna in the array antenna may be a patch antenna, a yagi-uda antenna, or a dipole antenna.

However, since the antennas in the array antenna are usually narrow-band antennas (such as the patch antennas listed above), the coverage frequency range of each antenna is limited, but the millimeter wave frequency range planned in the 5G system is usually many, for example, n257(26.5-29.5GHz) frequency range mainly based on 28GHz and n260(37.0-40.0GHz) frequency range mainly based on 39GHz, and the like, so that the conventional millimeter wave antenna module may not cover the mainstream millimeter wave frequency range planned in the 5G system, thereby resulting in poor antenna performance of the electronic device.

Disclosure of Invention

The embodiment of the invention provides an antenna unit and electronic equipment, and aims to solve the problem that the antenna performance of the electronic equipment is poor due to the fact that the frequency range covered by a millimeter wave antenna of the conventional electronic equipment is small.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present invention provides an antenna unit, where the antenna unit includes: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator; each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the metal groove, the M feeding arms are located between the bottom of the metal groove and the first insulator, the M feeding arms are arranged in the metal groove in a surrounding manner according to a first sequence, each of the M feeding arms is coupled to a target radiator, and M is an integer greater than 1.

In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes the antenna unit in the first aspect.

In an embodiment of the present invention, the antenna unit may include: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator; each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the metal groove, the M feeding arms are located between the bottom of the metal groove and the first insulator, the M feeding arms are arranged in the metal groove in a surrounding manner according to a first sequence, each of the M feeding arms is coupled to a target radiator, and M is an integer greater than 1. According to the scheme, the feed arm can be coupled with the target radiator, so that the feed arm can be coupled with the target radiator under the condition that the feed arm receives the alternating current signal, the target radiator generates induced current, and the feed arm and the target radiator can radiate electromagnetic waves with certain frequency; moreover, since there may be a plurality of current paths (e.g., a current path from the feeding arm to the target radiator and then to the feeding arm, a current path formed on the target radiator, and other current paths) of the induced current generated by coupling the feeding arm and the target radiator, there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the target radiator, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because M feed arms surround and set up in the metal recess according to first order, consequently can make the distance between each feed arm in these M feed arms great, so can reduce the interference between these M feed arms to can improve the isolation of antenna port, and then can further improve antenna element's performance.

Drawings

Fig. 1 is a schematic structural diagram of a conventional millimeter wave packaged antenna according to an embodiment of the present invention;

fig. 2 is an exploded view of an antenna unit according to an embodiment of the present invention;

fig. 3 is a reflection coefficient diagram of an antenna unit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a feeding arm according to an embodiment of the present invention;

fig. 5 is a top view of an antenna unit according to an embodiment of the present invention;

fig. 6 is a schematic diagram of isolation of an antenna unit according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of an antenna unit provided in an embodiment of the present invention;

fig. 8 is a second exploded view of an antenna unit according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention;

fig. 10 is a second schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention;

fig. 11 is one of the radiation patterns of an antenna element provided by an embodiment of the present invention;

fig. 12 is a second radiation pattern of the antenna unit according to the second embodiment of the present invention;

fig. 13 is a bottom view of an electronic device according to an embodiment of the invention.

Description of reference numerals: 10-millimeter wave antenna module; 11-array antenna with millimeter wave working wavelength; 12-RFIC; 13-PMIC; 14-a connector; 20-an antenna element; 201-metal recess; 202-a feeding part; 202 a-a first end of the feed; 203-feeding arm; 203 a-first end of the feeding arm; 204 — a first insulator; 205 — target radiator; 206 — a second insulator; 207-through hole; 208 — a third insulator; s1 — a first inner side wall; s2-a second inner side wall; l1 — first diagonal; l2 — second diagonal; 30-5G millimeter wave signals; 4-an electronic device; 40, a shell; 41-a first metal frame; 42-a second metal frame; 43 — a third metal frame; 44-a fourth metal frame; 45, a floor; 46 — a first antenna; 47-first groove.

In the embodiment of the present invention, coordinate axes in the coordinate system shown in the drawings are orthogonal to each other.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.

The terms "first" and "second," and the like, in the description and in the claims of the present application, are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first insulator and the second insulator, etc. are for distinguishing different insulators, and are not used to describe a specific order of the insulators.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of antenna elements means two or more antenna elements, and the like.

Some terms/nouns referred to in the embodiments of the present invention are explained below.

Coupling: it is meant that there is a close fit and interaction between the inputs and outputs of two or more circuit elements or electrical networks and that energy can be transferred from one side to the other by interaction.

The "coupling" in the embodiment of the present invention may be used to indicate that the components (e.g., the M feed arms and the target radiator in the embodiment) which are coupled when the antenna unit operates; these components are insulated from each other in the case of non-operation of the antenna element.

Alternating current signals: which is a signal that the direction of the current changes.

Multiple-input multiple-output (MIMO) technology: which refers to a technique for transmitting or receiving a signal using a plurality of antennas at a transmission end (i.e., a transmitting end and a receiving end) to improve communication quality. In this technique, a signal can be transmitted or received through a plurality of antennas at a transmission end.

Relative dielectric constant: a physical parameter for characterizing dielectric or polarization properties of the dielectric material.

Floor board: refers to a portion of an electronic device that can act as a virtual ground. Such as a Printed Circuit Board (PCB) in an electronic device, a metal bezel, or a display screen of an electronic device.

An embodiment of the present invention provides an antenna unit and an electronic device, where the antenna unit may include: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator; each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the metal groove, the M feeding arms are located between the bottom of the metal groove and the first insulator, the M feeding arms are arranged in the metal groove in a surrounding manner according to a first sequence, each of the M feeding arms is coupled to a target radiator, and M is an integer greater than 1. According to the scheme, the feed arm can be coupled with the target radiator, so that the feed arm can be coupled with the target radiator under the condition that the feed arm receives the alternating current signal, the target radiator generates induced current, and the feed arm and the target radiator can radiate electromagnetic waves with certain frequency; moreover, since there may be a plurality of current paths (e.g., a current path from the feeding arm to the target radiator and then to the feeding arm, a current path formed on the target radiator, and other current paths) of the induced current generated by coupling the feeding arm and the target radiator, there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the target radiator, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because M feed arms surround and set up in the metal recess according to first order, consequently can make the distance between each feed arm in these M feed arms great, so can reduce the interference between these M feed arms to can improve the isolation of antenna port, and then can further improve antenna element's performance.

The antenna unit provided by the embodiment of the present invention may be applied to an electronic device, and may also be applied to other devices that need to use the antenna unit, and may be determined specifically according to actual use requirements, and the embodiment of the present invention is not limited. The following describes an exemplary antenna unit provided in an embodiment of the present invention, taking an application of the antenna unit to an electronic device as an example.

The following describes an antenna unit provided in an embodiment of the present invention by way of example with reference to the accompanying drawings.

As shown in fig. 2, the antenna unit 20 may include a metal groove 201, M feeding portions 202 disposed at the bottom of the metal groove 201, M feeding arms 203 and a first insulator 204 disposed in the metal groove 201, and a target radiator 205 carried by the first insulator 204.

Each of the M feeding portions 202 may be electrically connected to the first end 203a of one feeding arm and may be insulated from the metal groove 201, the M feeding arms 203 may be located between the bottom of the metal groove 201 and the first insulator 204, the M feeding arms 203 may be circumferentially disposed in the metal groove 201 according to a first sequence, and each of the M feeding arms 203 may be coupled to the target radiator 205, where M is an integer greater than 1.

It is understood that, in the embodiment of the present invention, the first end of the feeding arm may be a feeding point in the antenna unit provided in the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, in order to illustrate the structure of the antenna unit more clearly, fig. 2 is an exploded view of the antenna unit, that is, an exploded view of the antenna unit is illustrated in a state where all components of the antenna unit are separated. In practical implementation, the M feeding portions, the M feeding arms, the first insulator and the target radiator are all disposed in the metal groove, that is, the metal groove, the M feeding portions, the M feeding arms, the first insulator and the target radiator form an integral body, so as to form the antenna unit according to the embodiment of the present invention.

In addition, the feeding portion 202 and the first end 203a of the feeding arm in fig. 2 are not shown in an electrically connected state, and in actual implementation, the feeding portion 202 may be electrically connected to the first end 203a of the feeding arm.

Optionally, in this embodiment of the present invention, the first sequence may be a clockwise sequence or a counterclockwise sequence. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, for example, the M feeding arms are circumferentially arranged in the metal groove in a clockwise order, and assuming that the M feeding arms are four feeding arms (the structures of the four feeding arms may be the same), the four feeding arms may be sequentially arranged in the metal groove in a clockwise order according to an order from the first end of the first feeding arm to the second end of the first feeding arm, from the first end of the second feeding arm to the second end of the second feeding arm, from the first end of the third feeding arm to the second end of the third feeding arm, and finally from the first end of the fourth feeding arm to the second end of the fourth feeding arm.

It should be noted that, in the embodiment of the present invention, when the M feeding arms are circumferentially disposed in the metal groove according to the first order, the distance between the first ends of each of the M feeding arms is relatively large, so that mutual interference between the feeding arms can be reduced.

In order to more clearly describe the antenna unit and the operating principle thereof provided by the embodiment of the present invention, an example of the operating principle of the antenna unit for transmitting and receiving signals provided by the embodiment of the present invention is specifically described below by taking one antenna unit as an example.

When the electronic equipment sends 5G millimeter wave signals, a signal source in the electronic equipment sends out alternating current signals, and the alternating current signals can be transmitted to the feeding arm through the feeding portion. Then, after the feeding arm receives the ac signal, the feeding arm may be coupled to the target radiator, so that the target radiator generates an induced current, and then the target radiator may radiate electromagnetic waves of multiple frequencies (since there may be multiple current paths of the induced current generated by coupling the feeding arm to the target radiator, for example, a current path from the feeding arm to the target radiator to the feeding arm, a current path formed on the target radiator, and the like, there may also be multiple frequencies of the electromagnetic waves radiated by the current on the feeding arm via the target radiator). In this way, the electronic device may transmit signals of different frequencies through the antenna unit provided in the embodiment of the present invention, that is, the antenna unit may generate a wider bandwidth.

For example, in the embodiment of the present invention, when the electronic device receives the 5G millimeter wave signal, the electromagnetic wave in the space where the electronic device is located may excite the target radiator, so that the target radiator may generate an induced current. After the target radiator generates the induced current, the target radiator may be coupled with the feeding arm such that the feeding arm generates the induced current (i.e., an induced ac signal). Then, the feeding arm may input the alternating current signal to a receiver in the electronic device through the feeding section, so that the electronic device may receive a 5G millimeter wave signal transmitted by another device. That is, the electronic device may receive signals through the antenna unit provided by the embodiment of the present invention.

The performance of the antenna unit provided by the embodiment of the present invention is exemplarily described below with reference to fig. 3.

Exemplarily, as shown in fig. 3, a reflection coefficient diagram of an antenna unit provided in an embodiment of the present invention is shown when the antenna unit operates. When the return loss is less than-6 dB (decibel), the frequency range covered by the antenna unit may be 25.4GHz-41.2GHz, which may include a plurality of millimeter wave bands (e.g., n257, n260, and n 261); when the return loss is less than-10 dB, the antenna unit may cover a frequency range of 26GHz-29.5GHz and 37.2GHz-40.1GHz, which may also include a plurality of major millimeter wave frequency bands (e.g., n257, n260, and n 261). Therefore, the antenna unit provided by the embodiment of the invention can cover most of 5G millimeter wave frequency bands, so that the antenna performance of the electronic equipment can be improved.

It should be noted that, when the return loss of one antenna unit is less than-6 dB, the antenna unit can meet the actual use requirement; the performance of an antenna element is better when its return loss is less than-10 dB. Namely, the antenna unit provided by the embodiment of the invention can ensure better performance on the basis of meeting the actual use requirement.

The embodiment of the present invention provides an antenna unit, where a feed arm may be coupled to a target radiator, so that when the feed arm receives an ac signal, the feed arm may be coupled to the target radiator to enable the target radiator to generate an induced current, and thus both the feed arm and the target radiator may radiate an electromagnetic wave with a certain frequency; moreover, since there may be a plurality of current paths (e.g., a current path from the feeding arm to the target radiator and then to the feeding arm, a current path formed on the target radiator, and other current paths) of the induced current generated by coupling the feeding arm and the target radiator, there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the target radiator, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because M feed arms surround and set up in the metal recess according to first order, consequently can make the distance between each feed arm in these M feed arms great, so can reduce the interference between these M feed arms to can improve the isolation of antenna port, and then can further improve antenna element's performance.

Optionally, in the embodiment of the present invention, the metal groove may be a rectangular groove or a circular groove.

In practice, the metal groove may also be a metal groove with any other possible shape, which may be determined according to actual use requirements, and the embodiment of the present invention is not limited.

In the embodiment of the present invention, the shape of the metal groove may be used to indicate the opening shape of the metal groove. That is, when the metal groove is a rectangular groove, the opening shape of the metal groove may be rectangular; when the metal groove is a circular groove, the opening shape of the metal groove may be circular.

In the embodiment of the invention, because the performances of the antenna units formed by the metal grooves in different shapes are possibly different, the grooves in proper shapes can be selected as the metal grooves in the antenna units provided by the embodiment of the invention according to the actual use requirements of the antenna units, so that the antenna units can work in a 5G millimeter wave frequency band.

Furthermore, because the shape of the antenna unit formed by the metal grooves with the regular shape is relatively stable, the performance of the antenna unit provided by the embodiment of the invention can be relatively stable by setting the metal grooves as the grooves with the regular shape (such as rectangular grooves or circular grooves) so as to improve the performance of the antenna unit.

Optionally, in an embodiment of the present invention, the M feeding portions may penetrate through the bottom of the metal groove.

In particular, in practical implementation, as shown in fig. 2, the first end 202a of the feeding portion may be electrically connected to the first end 203a of the feeding arm, and the second end (not shown in fig. 2) of the feeding portion may be electrically connected to one signal source in the electronic device (e.g., a 5G signal source in the electronic device). In this way, the current of the signal source in the electronic device may be transmitted to the feed arm through the feed portion, and then coupled to the target radiator through the feed arm, so that the target radiator may generate an induced current, and thus the feed arm and the target radiator may radiate electromagnetic waves of a certain frequency, and thus, the antenna unit provided by the embodiment of the present invention may radiate a 5G millimeter wave signal in the electronic device.

Optionally, in the embodiment of the present invention, each of the M feeding portions may form an "L-shaped" feeding structure with the feeding arm connected thereto.

Alternatively, in the embodiment of the present invention, one feeding arm (any one of the M feeding arms) may be a symmetrical feeding arm. For example, the feeding arm may be symmetrical in the horizontal direction, may be symmetrical in the vertical direction, and the like. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in an embodiment of the present invention, one feeding arm (any one of the M feeding arms) may be any one of the following feeding arms: a rectangular feed arm, a "T" feed arm, and a "Y" feed arm.

Of course, in practical implementation, the feeding arm in the embodiment of the present invention may also be any other possible feeding arm. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in this embodiment of the present invention, the M feeding arms may be the same feeding arm (for example, the M feeding arms are all "Y" -shaped feeding arms), or may be different feeding arms (for example, a part of the M feeding arms is a "T" -shaped feeding arm, and another part of the M feeding arms is a "Y" -shaped feeding arm). The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

For example, the M feeding arms may be all "T" shaped feeding arms 203 as shown in fig. 2, or all "Y" shaped feeding arms 203 as shown in fig. 4.

In the embodiment of the present invention, since the coupling amount of the feed arms in different forms (such as shape, material, structure, and the like) may be different when the feed arms are coupled to the target radiator, and the impedance requirements of the feed arms in different forms may also be different, that is, the influence of the feed arms in different forms on the working performance of the antenna unit may be different, a suitable feed arm may be selected according to the actual use requirement of the antenna unit, so that the antenna unit may work in a suitable frequency range.

Alternatively, in the embodiment of the present invention, the M feeding arms may be disposed in the metal groove along the inner sidewall of the metal groove in the first order from the first end of the feeding arm to the second end of the feeding arm.

That is, in the first order, the second end of one of the M feeding arms may be adjacent to the first end of the next feeding arm adjacent to the one feeding arm.

Illustratively, as shown in fig. 5, a top view of the antenna unit provided in the embodiment of the present invention in the direction opposite to the Z-axis (e.g., the coordinate system shown in fig. 2) is shown. Assuming that the first order is a clockwise order, the M feeding arms are four feeding arms, namely a first feeding arm 2030, a second feeding arm 2032, a third feeding arm 2031 and a fourth feeding arm 2033. Wherein the four feeding arms may be sequentially disposed in the metal groove in the order of clockwise from the first end of the first feeding arm 2030 to the second end of the first feeding arm 2030 to the first end of the second feeding arm 2032, then from the first end of the second feeding arm 2032 to the second end of the second feeding arm 2032 to the first end of the third feeding arm 2031, then from the first end of the third feeding arm 2031 to the second end of the third feeding arm 2031 to the first end of the fourth feeding arm 2033, and finally from the first end of the fourth feeding arm 2033 to the second end of the fourth feeding arm 2033 to the first end of the first feeding arm 2030. As can be seen from fig. 5, the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm may form a loop-like shape. That is, the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are circumferentially disposed in the metal groove.

In the embodiment of the present invention, since the current flowing through the feeding arms has directivity when the antenna unit operates, the distance between the first ends of different feeding arms can be increased by arranging the M feeding arms in the first order (i.e. the distances between the first end of one feeding arm and the first ends of other feeding arms are relatively large), so that the interference between different feeding arms can be reduced, and the isolation of the ports of the antenna unit (i.e. the feeding ports of the antenna unit) can be improved. And because the feed arms are arranged along the inner side wall of the metal groove, the feed arms can be discretely distributed in the metal groove, so that the mutual interference among the feed arms can be further reduced, and the isolation of the ports of the antenna unit can be further improved.

Optionally, in an embodiment of the present invention, the metal groove is a rectangular groove, the M feeding arms may include a first feeding arm, a second feeding arm, a third feeding arm and a fourth feeding arm, and the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are sequentially disposed in the metal groove along an inner side wall of the metal groove.

The first feeding arm and the third feeding arm may be parallel to a first inner side wall of the metal groove, the second feeding arm and the fourth feeding arm may be parallel to a second inner side wall of the metal groove, and the first inner side wall may be perpendicular to the second inner side wall.

It should be noted that, in the embodiment of the present invention, the first feeding arm, the second feeding arm, the third feeding arm, and the fourth feeding arm may also be disposed around the metal groove in any other possible manner, for example, the first feeding arm and the third feeding arm may be parallel to the second inner side wall of the metal groove, and the second feeding arm and the fourth feeding arm may be parallel to the first inner side wall of the metal groove. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

For example, as shown in fig. 5, the first feeding arm 2030 and the third feeding arm 2031 may be parallel to an inner sidewall S1 (i.e., the first inner sidewall) of the metal groove, and the second feeding arm 2032 and the fourth feeding arm 2033 may be parallel to an inner sidewall S2 (i.e., the second inner sidewall) of the metal groove. And as can be seen in fig. 5, the inner sidewall S1 is perpendicular to the inner sidewall S2.

It should be noted that, since fig. 5 is a top view of the antenna unit provided by the embodiment of the present invention in the direction opposite to the Z axis, both the first inner side wall and the second inner side wall of the metal groove are illustrated by the horizontal line in fig. 5.

Alternatively, in an embodiment of the present invention, the first feeding arm and the third feeding arm may form a feeding arm set (hereinafter, referred to as a first feeding arm set), and the second feeding arm and the fourth feeding arm may form a feeding arm set (hereinafter, referred to as a second feeding arm set).

In the embodiment of the present invention, as can be seen from fig. 5, the feeding arms are disposed in the metal groove in such a manner that the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are sequentially disposed in the metal groove along the inner sidewall of the metal groove, so that the distance between the first feeding arm 2030 and the third feeding arm 2031 is relatively large, and the distance between the second feeding arm 2032 and the fourth feeding arm 2033 is relatively large.

In the embodiment of the present invention, since the larger the distance between the feeding arms in one feeding arm group is, the smaller the influence of the feeding arm group on the other feeding arm groups is, the distance between the feeding arms in the two feeding arm groups (the first feeding arm group and the second feeding arm group) may be increased by sequentially disposing the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm in the metal groove along the inner side wall of the metal groove, so that in the operation process of the antenna unit, the mutual influence between the feeding arm groups may be reduced, and further, the port isolation of the antenna unit provided by the embodiment of the present invention may be improved.

Optionally, in an embodiment of the present invention, the first feeding arm set and the second feeding arm set may be two feeding arm sets with different polarizations. In particular, the first feeding arm set may be a feeding arm set of a first polarization, and the second feeding arm set may be a feeding arm set of a second polarization.

Optionally, in this embodiment of the present invention, the first polarization and the second polarization may be polarizations in different directions. Specifically, the first polarization may be +45 ° polarization or horizontal polarization; the second polarization may be-45 ° polarization or vertical polarization, etc.

For example, as shown in fig. 5, the first feeding arm group formed by the first feeding arm 2030 and the third feeding arm 2031 may be a horizontally polarized feeding arm group (i.e., the first polarization); the second feeding arm group composed of the second feeding arm 2032 and the fourth feeding arm 2033 may be a feeding arm group of vertical polarization (i.e., the above-described second polarization).

Of course, in practical implementation, the polarization direction of the first polarization and the polarization direction of the second polarization may be any other possible directions. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, the first feeding arm group and the second feeding arm group may be feeding arm groups polarized in two different directions (first polarization and second polarization), so that the antenna unit provided in the embodiment of the present invention may form a dual-polarized antenna unit, which may improve wireless connection capability of the antenna unit, thereby reducing probability of communication disconnection of the antenna unit, and improving communication capability of the antenna unit.

Optionally, in this embodiment of the present invention, when one feeding arm in the first feeding arm group is in the working state, the other feeding arm in the first feeding arm group may also be in the working state. Correspondingly, when one feeding arm in the second feeding arm group is in the working state, the other feeding arm in the second feeding arm group can also be in the working state. I.e. the feeding arms in the same set of feeding arms may be operated simultaneously.

Optionally, in the embodiment of the present invention, when the feeding arm in the first feeding arm group is in the working state, the feeding arm in the second feeding arm group may be in the working state, or may not be in the working state. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, since the antenna unit may include two feeding arm sets, the electronic device may send and receive signals through the two feeding arm sets in the antenna unit, that is, the antenna unit provided in the embodiment of the present invention may implement the MIMO technology, so that the communication capacity and the communication rate of the antenna unit may be improved, that is, the data transmission rate of the antenna unit may be improved.

Optionally, in the embodiment of the present invention, the M feeding arms may all be located on the same plane.

It can be understood that, in the embodiment of the present invention, when the M feeding arms are all located on the same plane, distances between the M feeding arms and the target radiator are all equal.

In an embodiment of the present invention, because the distances between the M feed arms and the target radiator are different, coupling parameters when the M feed arms are coupled to the target radiator may be different, for example, induced currents generated by the M feed arms coupled to the target radiator may be different, and therefore, the distances between the M feed arms and the target radiator may be flexibly set according to actual use requirements of the antenna unit (for example, a frequency range covered by the antenna unit).

In addition, since it is convenient to control parameters of coupling between the M feed arms and the target radiator, such as induced currents generated by coupling, when the distances between the M feed arms and the target radiator are all equal, it is possible to make the distances between different feed arms and the target radiator all equal by arranging the M feed arms on the same plane, which is convenient to control the operating state of the antenna unit provided by the embodiment of the present invention.

Optionally, in an embodiment of the present invention, the metal groove is a rectangular groove, the M feeding portions may be four feeding portions, two feeding portions of the four feeding portions may be located on one diagonal line of the metal groove, and the other two feeding portions of the four feeding portions may be located on the other diagonal line of the metal groove.

Optionally, in an embodiment of the present invention, two feeding portions electrically connected to the first feeding arm and the third feeding arm may be located on one diagonal line of the metal groove, and two feeding portions electrically connected to the second feeding arm and the fourth feeding arm may be located on the other diagonal line of the metal groove.

Exemplarily, as shown in fig. 5, the feeding portion 2020 electrically connected to the first feeding arm 2030 (specifically, the first end of the first feeding arm) and the feeding portion 2021 electrically connected to the third feeding arm 2031 (specifically, the first end of the third feeding arm) may be located on a first diagonal line L1 of the metal groove; the feeding portion 2022 electrically connected to the second feeding arm 2032 (may be a first end of the second feeding arm in particular) and the feeding portion 2023 electrically connected to the fourth feeding arm 2033 (may be a first end of the fourth feeding arm in particular) may be located on a second diagonal line L2 of the metal groove. In this way, the distance between the first feeding arm and the third feeding arm and the distance between the second feeding arm and the fourth feeding arm can be further increased, so that the port isolation of the antenna unit can be further improved.

It should be noted that, in the embodiment of the present invention, when the antenna unit provided in the embodiment of the present invention is viewed from the Z axis in a reverse direction, the feeding portion is not visible, and therefore, the feeding portion in fig. 5 is illustrated by a dotted line.

Next, referring to fig. 6, an exemplary isolation of the antenna unit according to the embodiment of the present invention is described.

Exemplarily, as shown in fig. 6, a schematic diagram of polarization isolation of an antenna unit when the antenna unit provided by the embodiment of the present invention operates is provided. Assuming that the metal groove is a rectangular groove; and the feeding arm group (namely the first feeding arm group) formed by the first feeding arm and the third feeding arm is a horizontally polarized feeding arm group, the feeding arm group (namely the second feeding arm group) formed by the second feeding arm and the fourth feeding arm is a vertically polarized feeding arm group, the feeding parts electrically connected with the first feeding arm and the third feeding arm are distributed on one diagonal line of the metal groove, and the feeding parts electrically connected with the second feeding arm and the fourth feeding arm are distributed on the other diagonal line of the metal groove. Then, as shown in fig. 6, the port isolation of the antenna unit is less than-20 dB in the full frequency band in which the antenna unit operates (i.e., all frequency bands that the antenna unit can cover). However, the port isolation of the antenna unit is-10 dB to meet the actual use requirement, and the better the isolation of the antenna unit (the smaller the isolation is, the better the isolation is), the better the polarization isolation of the antenna unit is, so that the polarization performance of the antenna unit can be further optimized.

Optionally, in the embodiment of the present invention, the amplitude of the signal source electrically connected to the two feeding portions on the same diagonal line is equal, and the phase difference is 180 degrees.

Optionally, in an embodiment of the present invention, the first feeding arm group and the second feeding arm group may be two feeding arm groups distributed orthogonally, and the signal sources electrically connected to the two feeding portions electrically connected to the feeding arms (the first feeding arm and the third feeding arm) in the first feeding arm group have equal amplitudes and 180-degree phase differences, and the signal sources electrically connected to the two feeding portions electrically connected to the feeding arms (the second feeding arm and the fourth feeding arm) in the second feeding arm group have equal amplitudes and 180-degree phase differences.

Alternatively, in the embodiment of the present invention, the cross-sectional shape of the first insulator may be the same as the opening shape of the metal groove, for example, a rectangular shape or a circular shape.

In the embodiment of the present invention, the shape of the first insulator may be any shape that can meet the actual use requirement. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in an embodiment of the present invention, a material of the first insulator may be any possible material such as plastic or foam. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in an embodiment of the present invention, a material of the first insulator may be an insulating material with a relatively small relative dielectric constant and a relatively small loss tangent.

Illustratively, in the embodiment of the present invention, the relative dielectric constant of the material of the first insulator may be 2.53, and the loss tangent may be 0.003.

In an embodiment of the present invention, the first insulator may not only carry the target radiator, but also isolate the target radiator from the M feeding arms, so as to prevent the target radiator and the M feeding arms from interfering with each other.

In addition, in the embodiment of the present invention, on the premise of carrying the target radiator, the smaller the loss tangent value of the material of the first insulator is, the smaller the influence of the first insulator on the radiation effect of the antenna unit is. That is, the smaller the loss tangent value of the material of the first insulator, the smaller the influence of the first insulator on the operation performance of the antenna unit, and the better the radiation effect of the antenna unit.

Optionally, in the embodiment of the present invention, as shown in fig. 8 in combination with fig. 2, the antenna unit 20 may further include a second insulator 206 disposed between the bottom of the metal groove 201 and the first insulator 204, and the second insulator 206 may carry the M feeding arms 203.

Wherein, for each of the M feeding portions, the feeding portion passing through the second insulator may be electrically connected to one feeding arm, respectively.

Optionally, in this embodiment of the present invention, a feeding arm of the M feeding arms may be carried on the second insulator, or may be carried in the second insulator. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It should be noted that, in the embodiment of the present invention, when the feeding arm of the M feeding arms is carried on the second insulator, the feeding arm may be embedded in the first insulator.

Exemplarily, as shown in fig. 7, a cross-sectional view of an antenna unit according to an embodiment of the present invention is provided. In fig. 7, the antenna unit 20 may further include a second insulator 206 disposed between the bottom of the metal groove 201 and the first insulator 204. Wherein the M feed arms 203 may be carried within a second insulator 206 and the first end of the feed 202 may be electrically connected to the feed arms 203 through the second insulator 206.

In the embodiment of the present invention, the second insulator may not only carry the M feeding arms, but also isolate the M feeding arms from the metal groove, so as to prevent interference between the M feeding arms and the metal groove.

Alternatively, in the embodiment of the present invention, the cross-sectional shape of the second insulator may be the same as the opening shape of the metal groove. Such as rectangular or circular, etc.

In the embodiment of the present invention, the shape of the second insulator may be any shape that can meet the actual use requirement. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Alternatively, in an embodiment of the present invention, a material of the second insulator may be the same as or different from a material of the first insulator. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In an exemplary embodiment of the present invention, the relative dielectric constant of the material of the first insulator may be 2.5, and the loss tangent may be 0.0001.

It should be noted that, in the embodiment of the present invention, on the premise of carrying the M feeding arms, the smaller the loss tangent value of the material of the second insulator is, the smaller the influence of the second insulator on the radiation effect of the antenna unit is. That is, the smaller the loss tangent value of the material of the second insulator, the smaller the influence of the second insulator on the operation performance of the antenna element, and the better the radiation effect of the antenna element.

Optionally, in an embodiment of the present invention, the target radiator may be a polygonal radiator or a circular radiator.

Optionally, in an embodiment of the present invention, the target radiator may be any possible polygonal radiator, such as a rectangular radiator, a hexagonal radiator, or a square radiator. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Of course, in actual implementation, the shape of the target radiator may also be any other possible shape, which may be determined according to actual use requirements, and the embodiment of the present invention is not limited.

In the embodiment of the present invention, since the frequency of the electromagnetic wave generated by coupling the target radiator with the M feed arms is related to parameters of the target radiator (for example, the shape and the area of the target radiator, etc.), specifically, the smaller the area of the target radiator is, the higher the frequency of the electromagnetic wave generated by coupling the target radiator with the M feed arms is, so that the target radiator with appropriate parameters (for example, the target radiator with an appropriate shape and/or the target radiator with an appropriate area, etc.) may be selected according to actual use requirements. Therefore, the antenna unit provided by the embodiment of the invention can work in a 5G millimeter wave frequency band.

Optionally, in the embodiment of the present invention, as shown in fig. 7, a surface of the target radiator 205 may be flush with a surface of the opening of the metal groove 201.

Of course, in actual implementation, the target radiator may also be located at any possible position in the metal groove, which may be determined according to actual use requirements, and the embodiment of the present invention is not limited.

In the embodiment of the invention, because the positions of the target radiators are different and the performances of the antenna units are possibly different, the positions of the target radiators can be flexibly set according to actual use requirements, so that the design of the antenna units can be more flexible.

Optionally, in the embodiment of the present invention, as shown in fig. 7, the bottom of the metal groove 201 may further be provided with M through holes 207 penetrating through the bottom of the metal groove 201, and each feeding portion 202 of the M feeding portions may be respectively disposed in one through hole 207.

Optionally, in the embodiment of the present invention, the M through holes may be through holes with the same diameter.

Optionally, in the embodiment of the present invention, the M through holes may be distributed on a diagonal line of the metal groove.

Specifically, the distribution manner of the M through holes in the metal groove may be determined according to the distribution positions of the M feeding portions in the metal groove.

In the embodiment of the invention, as the through holes are simple to arrange in the metal groove and easy to realize, the process of the feed part penetrating through the metal groove can be simplified by arranging the through holes penetrating through the bottom of the metal groove at the bottom of the metal groove and respectively arranging the M feed parts in the through holes.

Optionally, in an embodiment of the present invention, a third insulator may be disposed in each of the M through holes, and the third insulator may wrap the feeding portion disposed in the through hole.

In the embodiment of the invention, the third insulator, the feeding portion and the through hole arranged at the bottom of the metal groove together form a coaxial transmission structure with the characteristic impedance of 50 ohms.

In an embodiment of the present invention, the third insulator wraps the feeding portion disposed in the through hole, so that the feeding portion is fixed in the through hole.

Illustratively, as shown in fig. 7, a plurality of through holes 207 are provided at the bottom of the metal groove 201, a third insulator 208 is provided in each through hole 207, and the feeding portion 202 may pass through the third insulator 208 and the second insulator 206 provided in the through holes 207 and be electrically connected to the feeding arm 203.

It should be noted that, in fig. 7, the signal source 30 electrically connected to one end of the feeding portion 202 (for example, the second end of the feeding portion) may be a millimeter wave signal source in the electronic device.

In an embodiment of the present invention, the third insulator may be made of an insulating material having a relatively small relative permittivity.

Illustratively, the material of the third insulator may be any possible material such as a foam material or a plastic material.

Optionally, in an embodiment of the present invention, the third insulator may be made of the same insulating material as the first insulator, or may be made of a different insulating material. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the invention, on the one hand, since the diameter of the through hole may be larger than that of the feeding portion, when the feeding portion is disposed in the through hole, the feeding portion may not be fixed in the through hole, and therefore, by disposing the third insulator in the through hole and disposing the third insulator to wrap the feeding portion, the feeding portion may be fixed in the through hole. On the other hand, since the metal groove and the feeding portion are made of metal materials, in the working process of the antenna unit, the metal groove and the feeding portion may be in contact with each other to cause short circuit, the feeding portion and the metal groove can be isolated by arranging the third insulator in the through hole, the feeding portion is insulated from the metal groove, and therefore the antenna performance of the electronic device can be more stable.

In the embodiment of the present invention, the antenna units shown in the above drawings are all exemplarily described by referring to one drawing in the embodiment of the present invention. In specific implementation, the antenna units shown in the above drawings may also be implemented in combination with any other drawings that may be combined, which are illustrated in the above embodiments, and are not described herein again.

An embodiment of the present invention provides an electronic device, which may include the antenna unit provided in any one of fig. 2 to 8. For the description of the antenna unit, reference may be specifically made to the description of the antenna unit in the foregoing embodiments, and details are not described here.

The electronic device in the embodiment of the invention can be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a Personal Computer (PC), a Television (TV), a server or a teller machine, and the like, and the embodiment of the present invention is not particularly limited.

Optionally, in this embodiment of the present invention, at least one first groove may be disposed in a housing of the electronic device, and each first groove in the at least one first groove may be disposed with at least one antenna unit provided in this embodiment of the present invention.

In the embodiment of the present invention, at least one antenna unit provided in the embodiment of the present invention is integrated in the electronic device by disposing the at least one first groove in the housing of the electronic device and disposing at least one antenna unit provided in the embodiment of the present invention in each first groove, so that the electronic device may include the antenna array formed by the antenna units provided in the embodiment of the present invention.

Optionally, in the embodiment of the present invention, the first groove may be disposed in a frame of a housing of the electronic device.

In an embodiment of the present invention, as shown in fig. 9, the electronic device 4 may include a housing 40. The case 40 may include a first metal frame 41, a second metal frame 42 connected to the first metal frame 41, a third metal frame 43 connected to the second metal frame 42, and a fourth metal frame 44 connected to both the third metal frame 43 and the first metal frame 41. The electronic device 4 may further include a floor 45 connected to the second metal frame 42 and the fourth metal frame 44, and a first antenna 46 (specifically, these metal frames may also be a part of the first antenna) disposed in an area surrounded by the third metal frame 43, a part of the second metal frame 42, and a part of the fourth metal frame 44. Wherein, the second metal frame 42 is provided with a first groove 47. Therefore, the antenna unit provided by the embodiment of the invention can be arranged in the first groove, so that the electronic equipment can comprise the array antenna module formed by the antenna unit provided by the embodiment of the invention, and the design of integrating the antenna unit provided by the embodiment of the invention in the electronic equipment can be further realized.

In the embodiment of the present invention, the floor may be a PCB or a metal middle frame in an electronic device, or may be any portion that can be used as a virtual ground, such as a display screen of an electronic device.

In the embodiment of the present invention, the first antenna may be a communication antenna of a second generation mobile communication system (i.e., a 2G system), a third generation mobile communication system (i.e., a 3G system), a fourth generation mobile communication system (i.e., a 4G system), and the like of the electronic device. The antenna unit (the antenna unit formed by the metal groove, the M feeding portions, the M feeding arms, the first insulator, the target radiator and the like) integrated in the electronic device in the embodiment of the present invention may be an antenna of a 5G system of the electronic device.

Optionally, in the embodiment of the present invention, the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame may be sequentially connected end to form a closed frame; or, part of the first metal frame, the second metal frame, the third metal frame and the fourth metal frame may be connected to form a semi-enclosed frame; or, the first metal frame, the second metal frame, the third metal frame and the fourth metal frame may not be connected to each other to form an open frame. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It should be noted that the frame included in the casing 40 shown in fig. 9 is an exemplary closed frame formed by sequentially connecting the first metal frame 41, the second metal frame 42, the third metal frame 43, and the fourth metal frame 44 end to end, and does not limit the embodiment of the present invention. For the frames formed by other connection manners (part of the frames are connected or all the frames are not connected to each other) among the first metal frame, the second metal frame, the third metal frame and the fourth metal frame, the implementation manner of the frames is similar to that provided by the embodiment of the present invention, and in order to avoid repetition, the description is omitted here.

Optionally, in the embodiment of the present invention, the at least one first groove may be disposed in the same frame of the housing, or may be disposed in different frames. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in the embodiment of the present invention, a plurality of first grooves may be disposed on a housing of an electronic device, so that a plurality of antenna units provided in the embodiment of the present invention may be disposed in the electronic device, and thus the electronic device may include a plurality of antenna units, so as to improve antenna performance of the electronic device.

In the embodiment of the present invention, when a plurality of antenna units are disposed in the electronic device, according to the structure of the antenna units, the distance between two adjacent first grooves may be reduced, that is, the distance between two adjacent antenna units may be reduced, so that, when the electronic device includes a smaller number of antenna units, the scanning angles of beams of electromagnetic waves generated by M feed arms and a target radiator in the antenna units may be increased, and thus the coverage of millimeter wave antenna communication of the electronic device may be increased.

Optionally, in this embodiment of the present invention, the metal groove in the antenna unit may be a part of a housing of the electronic device. It will be appreciated that the metal recess may be a recess provided on a housing of the electronic device.

Optionally, in this embodiment of the present invention, the housing of the electronic device may be a radiator of a non-millimeter wave antenna in the electronic device.

In the embodiment of the present invention, the housing of the electronic device may also be used as (a radiator of) a non-millimeter wave antenna in the electronic device, so that the antennas (a millimeter wave antenna and a non-millimeter wave antenna) in the electronic device may be integrated into a whole, thereby greatly reducing the space occupied by the antennas in the electronic device.

Optionally, in the embodiment of the present invention, the metal groove in the antenna unit may be disposed on a metal frame of a housing of the electronic device.

Illustratively, as shown in fig. 10, at least one metal groove 201 may be provided in the housing 40 of the electronic device 4 provided in the embodiment of the present invention, and the M feeding arms, the M feeding portions, the first insulator, and the target radiator in the antenna unit may be disposed in the metal groove 201 (in practice, the metal groove is not visible in the perspective of the electronic device illustrated in fig. 10).

Optionally, in the embodiment of the present invention, one metal groove may be disposed in any one of the first metal frame, the second metal frame, the third metal frame, and the fourth metal frame of the housing. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It can be understood that, in the case that the metal groove is disposed on a frame of the housing (for example, the first metal frame, etc.), a side wall of the metal groove, a bottom of the metal groove, etc. may be a portion of the electronic device, and specifically may be a portion of the frame of the housing provided in the embodiment of the present invention.

In the embodiment of the present invention, in the above fig. 10, the metal groove 201 is disposed on the first metal frame 41 of the housing 40, and the opening direction of the metal groove is the positive direction of the Z axis of the coordinate system shown in fig. 10.

It can be understood that, in the embodiment of the present invention, as shown in fig. 10, when the metal groove is disposed in the second metal frame of the housing, the opening direction of the metal groove may be the X-axis forward direction; when the metal groove is arranged on the third metal frame of the shell, the opening direction of the metal groove can be the Z-axis direction; when the metal groove is disposed on the fourth metal frame of the housing, the opening direction of the metal groove may be the X-axis direction.

Optionally, in the embodiment of the present invention, a plurality of metal grooves may be disposed in a housing of an electronic device, and M feeding arms, M feeding portions, a first insulator, a target radiator, and other components in the embodiment of the present invention are disposed in each metal groove, so that a plurality of antenna units provided in the embodiment of the present invention may be integrated in the electronic device, and thus, the antenna units may form an antenna array, so that the antenna performance of the electronic device may be improved.

In the embodiment of the present invention, as shown in fig. 11, when the antenna unit provided in the embodiment of the present invention radiates a signal with a frequency of 28GHz, a radiation pattern of the antenna unit is provided; as shown in fig. 12, when the antenna unit provided in the embodiment of the present invention radiates a signal with a frequency of 39GHz, the antenna unit radiates a directional pattern. As can be seen from fig. 11 and 12, the maximum radiation direction of the antenna unit at 28GHz is the same as the maximum radiation direction of the antenna unit at 39GHz, and therefore the antenna unit provided by the embodiment of the present invention is suitable for forming a broadband antenna array. Therefore, the electronic device may be provided with at least two metal grooves, and each metal groove is provided with the M feed arms, the M feed portions, the first insulator, the target radiator and other components, so that the electronic device includes a plurality of antenna units provided in the embodiments of the present invention, and thus the electronic device may include an antenna array formed by the antenna units, and further, the antenna performance of the electronic device may be improved.

Optionally, in this embodiment of the present invention, when a plurality of antenna units provided in this embodiment of the present invention are integrated in an electronic device, a distance between two adjacent antenna units (that is, a distance between two adjacent metal grooves) may be determined according to an isolation of the antenna units and a scanning angle of an antenna array formed by the antenna units. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in the embodiment of the present invention, the number of the metal grooves provided in the housing of the electronic device may be determined according to the size of the metal groove and the size of the housing of the electronic device, which is not limited in the embodiment of the present invention.

Exemplarily, as shown in fig. 13, a bottom view of a plurality of antenna units provided on a housing according to an embodiment of the present invention in a Z-axis forward direction (a coordinate system shown in fig. 10) is provided. Assuming that the metal groove is a rectangular groove and the target radiator is a rectangular radiator, as shown in fig. 13, a plurality of antenna units (each formed by a metal groove on the housing and M feeding arms located in the metal groove) provided in the embodiment of the present invention are disposed on the third metal frame 43. Wherein M feed arms 203 and first insulator 204 are disposed within a metal recess (not shown in fig. 13) and the target radiator 205 is carried on the first insulator 204, and the feed arm in fig. 13 is a "T" shaped feed arm.

In the embodiment of the present invention, the above-mentioned fig. 13 is an example of 4 antenna units disposed on the third metal frame, and does not limit the embodiment of the present invention at all. It can be understood that, in a specific implementation, the number of the antenna units disposed on the third metal frame may be determined according to an actual use requirement, and the embodiment of the present invention is not limited at all.

An embodiment of the present invention provides an electronic device, which may include an antenna unit. The antenna unit may include: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator; each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the metal groove, the M feeding arms are located between the bottom of the metal groove and the first insulator, the M feeding arms are arranged in the metal groove in a surrounding manner according to a first sequence, each of the M feeding arms is coupled to a target radiator, and M is an integer greater than 1. According to the scheme, the feed arm can be coupled with the target radiator, so that the feed arm can be coupled with the target radiator under the condition that the feed arm receives the alternating current signal, the target radiator generates induced current, and the feed arm and the target radiator can radiate electromagnetic waves with certain frequency; moreover, since there may be a plurality of current paths (e.g., a current path from the feeding arm to the target radiator and then to the feeding arm, a current path formed on the target radiator, and other current paths) of the induced current generated by coupling the feeding arm and the target radiator, there may also be a plurality of frequencies of the electromagnetic wave generated by the current on the feeding arm via the target radiator, so that the antenna unit may obtain a wider bandwidth, and thus the frequency band covered by the antenna unit may be increased. And because M feed arms surround and set up in the metal recess according to first order, consequently can make the distance between each feed arm in these M feed arms great, so can reduce the interference between these M feed arms to can improve the isolation of antenna port, and then can further improve antenna element's performance.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An antenna unit, characterized in that the antenna unit comprises: the antenna comprises a metal groove, M feed parts arranged at the bottom of the metal groove, M feed arms and a first insulator arranged in the metal groove, and a target radiator borne by the first insulator;

each of the M feeding portions is electrically connected to a first end of one feeding arm and insulated from the metal groove, the M feeding arms are located between the bottom of the metal groove and the first insulator, the M feeding arms are arranged in the metal groove in a surrounding manner according to a first sequence, each of the M feeding arms is coupled to the target radiator, and M is an integer greater than 1.

2. The antenna element of claim 1, wherein said M feed arms are disposed within said metal groove in a first order along an inner sidewall of said metal groove in order from a first end of the feed arm to a second end of the feed arm.

3. The antenna element of claim 1, wherein the metal groove is a rectangular groove, and the M feeding arms include a first feeding arm, a second feeding arm, a third feeding arm and a fourth feeding arm, and the first feeding arm, the second feeding arm, the third feeding arm and the fourth feeding arm are sequentially disposed in the metal groove along an inner sidewall of the metal groove;

the first feeding arm and the third feeding arm are parallel to a first inner side wall of the metal groove, the second feeding arm and the fourth feeding arm are parallel to a second inner side wall of the metal groove, and the first inner side wall is perpendicular to the second inner side wall.

4. The antenna element of claim 3, wherein said M feed arms are located on a same plane.

5. The antenna unit of any one of claims 1 to 4, wherein said M feed portions extend through said metal groove bottom.

6. The antenna unit according to any one of claims 1 to 4, wherein the metal slot is a rectangular slot, the M feeding portions are four feeding portions, two feeding portions of the four feeding portions are located on one diagonal of the metal slot, and the other two feeding portions of the four feeding portions are located on the other diagonal of the metal slot.

7. An antenna unit according to claim 6, characterized in that the signal sources electrically connected to the two feeding portions on the same diagonal are equal in amplitude and 180 degrees out of phase.

8. The antenna element of any one of claims 1-4, further comprising a second insulator disposed between said metal groove bottom and said first insulator, said second insulator carrying said M feed arms;

wherein, for each of the feeding portions, the feeding portion passing through the second insulator is electrically connected to one feeding arm, respectively.

9. The antenna unit of claim 8, wherein the target radiator is a polygonal radiator or a circular radiator.

10. The antenna unit of any of claims 1-4, wherein a surface of the target radiator is flush with a surface of the opening of the metal recess.

11. An electronic device, characterized in that the electronic device comprises at least one antenna unit according to any of claims 1-10.

12. The electronic device of claim 11, wherein at least one first recess is disposed in a housing of the electronic device, and wherein at least one antenna element is disposed in each of the at least one first recess.

13. The electronic device of claim 11, wherein the metal groove in the antenna unit is part of a housing of the electronic device.